next
Version:
The React Framework
328 lines (327 loc) • 12 kB
JavaScript
import './require-hook';
import './node-polyfill-crypto';
import * as log from '../build/output/log';
import loadConfig from './config';
import path, { resolve } from 'path';
import { NON_STANDARD_NODE_ENV } from '../lib/constants';
import { PHASE_DEVELOPMENT_SERVER, SERVER_FILES_MANIFEST } from '../shared/lib/constants';
import { PHASE_PRODUCTION_SERVER } from '../shared/lib/constants';
import { getTracer } from './lib/trace/tracer';
import { NextServerSpan } from './lib/trace/constants';
import { formatUrl } from '../shared/lib/router/utils/format-url';
import { AsyncCallbackSet } from './lib/async-callback-set';
let ServerImpl;
const getServerImpl = async ()=>{
if (ServerImpl === undefined) {
ServerImpl = (await Promise.resolve(require('./next-server'))).default;
}
return ServerImpl;
};
const SYMBOL_LOAD_CONFIG = Symbol('next.load_config');
/** The wrapper server used by `next start` */ export class NextServer {
constructor(options){
this.options = options;
}
get hostname() {
return this.options.hostname;
}
get port() {
return this.options.port;
}
getRequestHandler() {
return async (req, res, parsedUrl)=>{
return getTracer().trace(NextServerSpan.getRequestHandler, async ()=>{
const requestHandler = await this.getServerRequestHandler();
return requestHandler(req, res, parsedUrl);
});
};
}
getUpgradeHandler() {
return async (req, socket, head)=>{
const server = await this.getServer();
// @ts-expect-error we mark this as protected so it
// causes an error here
return server.handleUpgrade.apply(server, [
req,
socket,
head
]);
};
}
setAssetPrefix(assetPrefix) {
if (this.server) {
this.server.setAssetPrefix(assetPrefix);
} else {
this.preparedAssetPrefix = assetPrefix;
}
}
logError(...args) {
if (this.server) {
this.server.logError(...args);
}
}
async render(...args) {
const server = await this.getServer();
return server.render(...args);
}
async renderToHTML(...args) {
const server = await this.getServer();
return server.renderToHTML(...args);
}
async renderError(...args) {
const server = await this.getServer();
return server.renderError(...args);
}
async renderErrorToHTML(...args) {
const server = await this.getServer();
return server.renderErrorToHTML(...args);
}
async render404(...args) {
const server = await this.getServer();
return server.render404(...args);
}
async prepare(serverFields) {
const server = await this.getServer();
if (serverFields) {
Object.assign(server, serverFields);
}
// We shouldn't prepare the server in production,
// because this code won't be executed when deployed
if (this.options.dev) {
await server.prepare();
}
}
async close() {
if (this.server) {
await this.server.close();
}
}
async createServer(options) {
let ServerImplementation;
if (options.dev) {
ServerImplementation = require('./dev/next-dev-server').default;
} else {
ServerImplementation = await getServerImpl();
}
const server = new ServerImplementation(options);
return server;
}
async [SYMBOL_LOAD_CONFIG]() {
const dir = resolve(this.options.dir || '.');
const config = await loadConfig(this.options.dev ? PHASE_DEVELOPMENT_SERVER : PHASE_PRODUCTION_SERVER, dir, {
customConfig: this.options.conf,
silent: true
});
// check serialized build config when available
if (process.env.NODE_ENV === 'production') {
try {
const serializedConfig = require(path.join(dir, '.next', SERVER_FILES_MANIFEST)).config;
// @ts-expect-error internal field
config.experimental.isExperimentalCompile = serializedConfig.experimental.isExperimentalCompile;
} catch (_) {
// if distDir is customized we don't know until we
// load the config so fallback to loading the config
// from next.config.js
}
}
return config;
}
async getServer() {
if (!this.serverPromise) {
this.serverPromise = this[SYMBOL_LOAD_CONFIG]().then(async (conf)=>{
if (!this.options.dev) {
if (conf.output === 'standalone') {
if (!process.env.__NEXT_PRIVATE_STANDALONE_CONFIG) {
log.warn(`"next start" does not work with "output: standalone" configuration. Use "node .next/standalone/server.js" instead.`);
}
} else if (conf.output === 'export') {
throw Object.defineProperty(new Error(`"next start" does not work with "output: export" configuration. Use "npx serve@latest out" instead.`), "__NEXT_ERROR_CODE", {
value: "E375",
enumerable: false,
configurable: true
});
}
}
this.server = await this.createServer({
...this.options,
conf
});
if (this.preparedAssetPrefix) {
this.server.setAssetPrefix(this.preparedAssetPrefix);
}
return this.server;
});
}
return this.serverPromise;
}
async getServerRequestHandler() {
if (this.reqHandler) return this.reqHandler;
// Memoize request handler creation
if (!this.reqHandlerPromise) {
this.reqHandlerPromise = this.getServer().then((server)=>{
this.reqHandler = getTracer().wrap(NextServerSpan.getServerRequestHandler, server.getRequestHandler().bind(server));
delete this.reqHandlerPromise;
return this.reqHandler;
});
}
return this.reqHandlerPromise;
}
}
/** The wrapper server used for `import next from "next" (in a custom server)` */ class NextCustomServer {
constructor(options){
this.didWebSocketSetup = false;
this.options = options;
}
getInit() {
if (!this.init) {
throw Object.defineProperty(new Error('prepare() must be called before performing this operation'), "__NEXT_ERROR_CODE", {
value: "E355",
enumerable: false,
configurable: true
});
}
return this.init;
}
get requestHandler() {
return this.getInit().requestHandler;
}
get upgradeHandler() {
return this.getInit().upgradeHandler;
}
get server() {
return this.getInit().server;
}
get hostname() {
return this.options.hostname;
}
get port() {
return this.options.port;
}
async prepare() {
const { getRequestHandlers } = require('./lib/start-server');
let onDevServerCleanup;
if (this.options.dev) {
this.cleanupListeners = new AsyncCallbackSet();
onDevServerCleanup = this.cleanupListeners.add.bind(this.cleanupListeners);
}
const initResult = await getRequestHandlers({
dir: this.options.dir,
port: this.options.port || 3000,
isDev: !!this.options.dev,
onDevServerCleanup,
hostname: this.options.hostname || 'localhost',
minimalMode: this.options.minimalMode,
quiet: this.options.quiet
});
this.init = initResult;
}
setupWebSocketHandler(customServer, _req) {
if (!this.didWebSocketSetup) {
var _req_socket;
this.didWebSocketSetup = true;
customServer = customServer || (_req == null ? void 0 : (_req_socket = _req.socket) == null ? void 0 : _req_socket.server);
if (customServer) {
customServer.on('upgrade', async (req, socket, head)=>{
this.upgradeHandler(req, socket, head);
});
}
}
}
getRequestHandler() {
return async (req, res, parsedUrl)=>{
this.setupWebSocketHandler(this.options.httpServer, req);
if (parsedUrl) {
req.url = formatUrl(parsedUrl);
}
return this.requestHandler(req, res);
};
}
async render(...args) {
let [req, res, pathname, query, parsedUrl] = args;
this.setupWebSocketHandler(this.options.httpServer, req);
if (!pathname.startsWith('/')) {
console.error(`Cannot render page with path "${pathname}"`);
pathname = `/${pathname}`;
}
pathname = pathname === '/index' ? '/' : pathname;
req.url = formatUrl({
...parsedUrl,
pathname,
query
});
await this.requestHandler(req, res);
return;
}
setAssetPrefix(assetPrefix) {
this.server.setAssetPrefix(assetPrefix);
}
getUpgradeHandler() {
return this.server.getUpgradeHandler();
}
logError(...args) {
this.server.logError(...args);
}
async renderToHTML(...args) {
return this.server.renderToHTML(...args);
}
async renderError(...args) {
return this.server.renderError(...args);
}
async renderErrorToHTML(...args) {
return this.server.renderErrorToHTML(...args);
}
async render404(...args) {
return this.server.render404(...args);
}
async close() {
var _this_init, _this_cleanupListeners;
await Promise.allSettled([
(_this_init = this.init) == null ? void 0 : _this_init.server.close(),
(_this_cleanupListeners = this.cleanupListeners) == null ? void 0 : _this_cleanupListeners.runAll()
]);
}
}
// This file is used for when users run `require('next')`
function createServer(options) {
if (options && (options.turbo || options.turbopack)) {
process.env.TURBOPACK = '1';
}
// The package is used as a TypeScript plugin.
if (options && 'typescript' in options && 'version' in options.typescript) {
const pluginMod = require('./next-typescript');
return pluginMod.createTSPlugin(options);
}
if (options == null) {
throw Object.defineProperty(new Error('The server has not been instantiated properly. https://nextjs.org/docs/messages/invalid-server-options'), "__NEXT_ERROR_CODE", {
value: "E75",
enumerable: false,
configurable: true
});
}
if (!('isNextDevCommand' in options) && process.env.NODE_ENV && ![
'production',
'development',
'test'
].includes(process.env.NODE_ENV)) {
log.warn(NON_STANDARD_NODE_ENV);
}
if (options.dev && typeof options.dev !== 'boolean') {
console.warn("Warning: 'dev' is not a boolean which could introduce unexpected behavior. https://nextjs.org/docs/messages/invalid-server-options");
}
// When the caller is a custom server (using next()).
if (options.customServer !== false) {
const dir = resolve(options.dir || '.');
return new NextCustomServer({
...options,
dir
});
}
// When the caller is Next.js internals (i.e. render worker, start server, etc)
return new NextServer(options);
}
// Support commonjs `require('next')`
module.exports = createServer;
// exports = module.exports
// Support `import next from 'next'`
export default createServer;
//# sourceMappingURL=next.js.map